208 REVISTA CHILENA DE HISTORIA NATURAL 
Dee 
are very much flattened, presenting two surfaces; one anterior to, 
and the other posterior to, and below the pariental emi- 
nences. 
In norma lateralis the great prognathism and the massive na- 
ture of the jaws and malars immediately call the attention, The *' 
forehead is receding, and the whole sagittal curve, from the me- 
topic point to the inion forms a single elliptic are, without any 
flattening at the bregma, or at the post-bregmatic portion of the 
skull. 
The zygomata are strong and the post-zygomatic ridges distinct; 
with indications of remarkably developed muscular attachments. 
The temporal crest is also prominent, but very irregular in outli- 
ne, rising obliquely to a point vertically above the meatus awdi- 
torvus, whence it falls to the parietal eminence. The mastoids 
are insignificant, but the mastoid foramina are unusuaily wel 
marked; as are all the foramina of this series. 
The digastric grooves are deepand broad, and the occipito- 
mastoidea sutures form parallel graoves of considerable size. 
The occipital condyles are slight, but pointed and _ projecting. 
The palate is elliptical in shape, with a staphylinic index of 
80.1. 
In norma facialis, what strikes one at once is the negro type 
of face, with its massive Jaws, prominent malars, & overhanging 
glabella, and superciliary ridges. 
The face is mesopic and leptoprosopic but has a broad appea- 
rance, owing to the fulness of the malars. 
The bidacryc distance is rather more than is usual in Ameri- 
can skulls. ‘The nasal bones are entirely different in formation 
to those in As the bridge being depressed, but the lower part 
of these homes much wider than at the nasion. 
The apestura pyriformis instead of presenting sharp angles is 
rounded at the corners and slightly truncated: the nasal spine 
is prominent. 
The orbits are squarish, and the bony rim massive, and what 
is peculiar have two supraorbital notches. There is a conside- 
rable facial and subnasal prognathism, the upper jaw projecting 
greatly. Most of the teeth are wanting; their loss being post- 
mortem. The alveolar processes show that they were protru- 
ding. The few molars left are món worn down, but not the 
same degree as in A. 
The lower jaw is strong and heavy; the chin square and full, 
fairly high symphysis, and moderately deep sigmoid notch. 
The thickness of this mandible is unusual; being ice both at 
the point of the chin and at the second molar, The angle of the 
narrow ascending ramus is slightly everted. 
